RPC vs SPY: Correlation
Measured on weekly returns over the past three years, Ridgepost Capital, Inc. (RPC) and SPDR S&P 500 ETF Trust (SPY) carry a correlation of 0.53, a moderate link.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are RPC and SPY?
Over the past 3 years, RPC and SPY moved with a correlation of 0.53, which is moderate. The relationship has been stable: the 1-year correlation (0.49) sits close to the 3-year figure. Over 5 years the correlation is 0.46, and the annualized covariance of weekly returns is 294.2 %².
Within RPC's tracked universe of 12 assets, SPY comes in at #6 by 3-year correlation. Their recent paths diverged sharply: over the last 12 months SPY outperformed by 49.4 percentage points (-28.8% for RPC against +20.6% for SPY). Risk is not evenly split, since RPC carries 2.6 times the volatility of the other side.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
RPC vs SPY: side by side
| RPC (Ridgepost Capital, Inc.) | SPY (SPDR S&P 500 ETF Trust) | |
|---|---|---|
| 1-year return | -28.8% | +20.6% |
| 5-year return | -23.6% | +82.4% |
| Volatility (ann.) | 38.1% | 14.5% |
| Beta vs S&P 500 | 1.41 | 1.00 |
| Max drawdown (3Y) | -50.2% | -18.8% |
| Market cap | $1.0B | – |
| P/E (trailing) | 36.3 | – |
| Dividend yield | 1.70% | 1.01% |
| Expense ratio | – | 0.09% |
| Assets under management | – | $795.3B |
| Sector / category | US Listed | ETF · US Large Cap |
SPY is a Large Blend fund from State Street Investment Management: $795.3B under management, 504 holdings, a 0.09% expense ratio, a 1.01% trailing dividend yield.
Year-by-year returns
| Year | RPC | SPY |
|---|---|---|
| 2022 | -23.1% | -18.2% |
| 2023 | -3.0% | +26.2% |
| 2024 | +25.2% | +24.9% |
| 2025 | -21.2% | +17.7% |
| 2026 | -10.4% | +13.7% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are RPC and SPY good diversifiers for each other?
Only partially. A correlation of 0.53 means RPC and SPY share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
FAQ
What is the correlation between RPC and SPY?
The RPC/SPY correlation stands at 0.53 on a 3-year window (1 year: 0.49, 5 years: 0.46), computed from weekly returns as of 2026-08-27.
Is SPY a good diversifier for RPC?
Only partially. A correlation of 0.53 means RPC and SPY share most of their swings. Pairing them dampens volatility somewhat, but it will not protect against a common drawdown.
What does a correlation of 0.53 mean?
A reading of 0.53 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
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Related comparisons
Hubs: RPC correlations · SPY correlations
